Three-Trust Fabric
(Presence • Performance • Provenance)

Authra’s trust model centers on three independent, composable assurances:

• Presence — Multi-signal Proof-of-Presence (GNSS + cellular/Wi-Fi/BT coherence) with TEE-backed device attestation and optional precision modes.  

• Performance — Continuous QoE telemetry (latency, jitter, throughput, reliability, uptime) with anti-gaming filters, cohort coherence, and SLO-oriented aggregates.  

• Provenance — Cryptographic lineage for every datum: signed payloads, batch commitments (Merkle), public anchoring on Orbit L3, delayed-inbox force-inclusion, and verifiable replayable audit trails.

Temporal Anchoring: Each proof in the Three-Trust Fabric is bound to a canonical, bias-resistant notion of time. Authra operates its own temporal anchoring layer, which continuously derives a median timestamp from diverse sources (GNSS, multi-NTP/PTP pools, and validator nodes) and seals it with cryptographic attestations. This enables every Presence, Performance, and Provenance proof to carry a verifiable timestamp, along with a Time Confidence Score (TCS) and explicit offset vectors to reference standards. By treating time as a horizontal primitive rather than a separate lane, Authra strengthens the integrity of all three trust dimensions without diluting the triadic framework.

Temporal Veracity within Provenance: Ordering and auditability hinge on reliable time. Authra proofs embed canonical timestamps sourced from our Temporal Anchoring service, together with cryptographic validator signatures and offset data to UTC/GNSS/PTP. This ensures that provenance evidence not only shows who and what, but also establishes when with high verifiability, enabling regulators, enterprises, and auditors to reconcile Authra’s records with their own system logs.

This separation lets buyers consume “where,” “how well,” and “how we know” as distinct, audit-ready artifacts, without new hardware or privacy compromises. The Fabric’s Presence and Performance assurances are realized concretely as the dual core of Yeggina proofs; Provenance is enforced through signed payloads, batch commitments, and public anchoring.